Process of attaching an abrading-surface to metal.



' No. 842,993. PATENTED FEB.5,1907. s. B; ARCHER. PROCESS 0P ATTACHING AN ABRADING SURFACE T0 METAL.

APPLICATION FILED JUNE 9, 1905.

I I I v guoawl'oz Wilma: w 1 v I UNITED ST ES PATENT OFFICE.

SAMUEL B. ARCHER, OF SARATOGA'ISPRINGS;NEWYGRK.

PROCESS OF TTAc'Huye AN ABRADllNG-SURFACE To METAL.

Specification of Letters Patent.

Application filed June 9,1905. Serial-No. 264,408.

To all waomfzamay concern:

Be it known that I, SAMUEL B. ARCHER, a cltizen of the United States, residing at Saratoga Springs, in the county of Saratoga" and State of New York, have invented certain newand useful Improvements in Processes for Attaching an Abrading-Surfaoe to Metal, of which the following is a specification. I

This invention relates to improvements in abrading material; and it consists in an improved process of coating iron, steel, orother .metallic substances with flint, emery, corundum, carborundum, or other like substances. The principal object of my invention is to obtain an abrading-suriace firmly: attached I to iron, steel, or other metallic surfaces for grinding, olishing, grating, delinting cottonseed, peeing potatoes, and other similar purposes.

-Heretofore abrading surfaceshave been applied to metal by means of oil, japan,

' shellac, gum, sulfur, and other: similar subof the whole abrading-surface.

stances, but with such substances as these the adhesion of the abrading material tothe metal is veryaweak, and in certain machines,

such as those used for grinding, polishing, or

delintin cotton-seed, which run at a high a speed, the frictional heat is so very high that e material holding the abrading material decomposes, wh1ch causes a disintegration Then m another class .of machines used for peeling potatoes, grating horse-radish, or other wet' substances the water soon penetrates between the abradant andthe metal and causes the abradant to fall ofl. In order'to obviate these disadvantages and to produce an abradin g surface on a metal base that will be equal y efficient-for either a high temperature ora wet substance, I u se the means illustrated in the accompanying' drawing-and described in the following specificationi -'In the drawing is illustrated a section of my abrading-surface applied to a metal' plate. h 1 designates a plate ofmetal having applied -to" it an enamel 2, having embedded therein grains or particles of abrading material. 3, such as flint, emery, oryother like substances.

'To more fully describe hat I mean by enamel and to show more clearlywherein iny process differs from those in'common use,

1 state that the enamel hercin'described is made "ofclay, feldspar, florspar, flint, glass,

manufacturers of enameled iron lifolloww are, bath-tubs, and such articles, and one of the formulas used" for such purpose is givenin Patent No. 222,422,.butlany similar formula may be usedfor the purpose.

1-11 applying the abradant .the. metal base known processes. A coat of liquidenamel is 1 then applied'and allowed to dry, after which tem eraturc the enamel fuses with the metal. Whi e in this highly-heated condition a coating of dry powdered enamel is applied tothe cotton-Seed seldom attains above 400 Fah- "material attache inthis way affected by frictional heat.v

Having thus described my invention, what Iclaimis 1-. Abrading-tools consisting of metal havembedded therein 'unitedjto the fusion.

2. The process of attaching an abradin surface to metal, for the purposes specifie consisting in applying a coating of liquid enamel, then heating the w ole to a temperature that fuses the powdered enamelandre the abradafnt firmly to the metal.

in presence of two witnesses.

SAMUEL B. ARCHER; y Witnesses:

.,FRANCIS S. .MAeinRE, i v Q Jomv A. Munrn'r.

Patented Feb. 5, 1907.. I

the metal is heated to a cherry red. At this renheit it canbedplainly seen thatllslibradirgg w' not e ing a coating of enamelwith an abradantmetal by. T

duces it. to a plastic state and while in thiscondition applying a coating .of' abrad ng material and keeping the wholeat a high temperature until the enamel sets and holdsboracic acid, oXids,'&c., such as is used by is first thoroughly'cleaned by any of the wellsurface, and the whole is again heated to a in the enamel, when it. is

the enamel ran es from 800 to,

attained in g1'indi11g, polishing, or delinting,

enamel to a metal 'plate .and'allowing it to dry, then heating the metal and applying to its coated-surface a coatin of dry. powdered v In testimony whereof I afiix my signature I 

